Issue

Vol. 17 (2025)

Molecular Mechanism Behind the Capture of Fluorinated Gases by Metal–Organic Frameworks

https://doi.org/10.1007/s40820-024-01584-1
Qian Wang
College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Siping Rd 1239, Shanghai 200092, People’s Republic of China
Yong Hu
Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Caoan Road 4800, Shanghai 201804, People’s Republic of China
Yifan Gu
College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Siping Rd 1239, Shanghai 200092, People’s Republic of China

Corresponding Author: Yifan Gu

159219yifan_gu@tongji.edu.cn

Nano-Micro Letters, Vol. 17 (2025), Article Number: 118

Abstract

Fluorinated gases (F-gases) play a vital role in the chemical industry and in the fields of air conditioning, refrigeration, health care, and organic synthesis. However, the direct emission of waste gases containing F-gases into the atmosphere contributes to greenhouse effects and generates toxic substances. Developing porous materials for the energy-efficient capture, separation, and recovery of F-gases is highly desired. Recently, as a highly designable porous adsorbents, metal–organic frameworks (MOFs) exhibit excellent selective sorption performance toward F-gases, especially for the recognition and separation of different F-gases with highly similar properties, showing their great potential in F-gases control and recovery. In this review, we discuss the capture and separation of F-gases and their azeotropic, near-azeotropic, and isomeric mixtures in various application scenarios by MOFs, specifically classify and analyze molecular interaction between F-gases and MOFs, and interpret the mechanisms underlying their high performance regarding both adsorption capacity and selectivity, providing a repertoire for future materials design. Challenges faced in the transformation research roadmap of MOFs adsorbent separation technologies toward F-gases are also discussed, and areas for future research endeavors are highlighted.


Highlights:
1 The progress of metal–organic frameworks (MOFs) in capturing and separating F-gases is highlighted.
2 The molecular mechanisms of adsorption and separation are classified and analyzed.
3 Toolboxes of MOFs structural design for fluorinated gases separation are provided.

Keywords

Fluorinated gas Metal–organic framework Adsorption Separation Molecular interaction
Wang, Qian, Yong Hu, and Yifan Gu. 2025. “Molecular Mechanism Behind the Capture of Fluorinated Gases by Metal–Organic Frameworks”. Nano-Micro Letters 17 (January):118. https://doi.org/10.1007/s40820-024-01584-1.
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